期刊
JOURNAL OF POWER SOURCES
卷 129, 期 1, 页码 101-106出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2003.11.015
关键词
LiNi0.8C0.2O2; titanium dioxide; surface coating; lithitun ion batteries
Electrochemical performance and spectroscopic characterization of native and TiO2-coated LiNi0.8Co0.2O2 were investigated. The electrochemical results showed TiO2-coated materials exhibited better cycle stability in the different potential regions (i.e. 3.0-4.3 and 3.0-4.6 V) and the decomposition of the electrolytes was suppressed on coated materials surface. In addition, FT-IR and temperature-programmed desorption-mass spectroscopy (TPD-MS) results demonstrated that different oxidation products were formed on the native and coated electrodes. A possible decomposition mechanism of the electrolytes has been proposed based on our results. (C) 2003 Elsevier B.V. All rights reserved.
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